Illegal tenants are a very bad idea in all cases. You will owe them 6 months rent each if discovered, and can get charged big bills by the town. ...

Had friends rented two rooms in my house with kids. Left minor wall damage, garbage, and debt

It sounds like you illegally rented rooms, which means you might have a heck of a time collecting if they raise that fact. Rent yes, as to...

Can I file taxes?

Sure you can always file taxes if you want, you don't always have to, but we would need more info

Is there equivalent irrevocable life insurance trust in France (for the purpose of inheritance protection and tax reduction)?

You need to ask an international lawyer perhaps, but most likely a french attorney.

I'd have to see the letter to really answer your question. It sounds like if you don't dispute it, they are assuming you agree to what they are...

Have I taken the proper steps?

What do you mean agree to their services? You have to be much more specific. This sounds like an entirely new case, so which allegations do...

Is it OK in NJ for a school to have kids practice fire drills as a form of punishment.

I'm not seeing an issue here, unless you are saying your kids were not allowed to eat lunch at any point.

Do I have to repay my employer, the estimated training costs if leave the company ?

Don't take the job if you think there is a significant issue with that. Thats for if YOU quit, not if you get fired.

Can I get a refund?

You can most likely substitute an attorney without issue. You will need to find that other attorney first, who is willing to take over the case...

How long does the landlord have before reporting if a non payment claim?

Then they can come after you for the unpaid rent and evict you for not paying. No judge is going to say, well...he lives there for free now.